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1. Lightning strokeMetal smelting enterprises are generally located in suburban areas or outer suburbs, and occupy high buildings such as 2,000-m3 blast furnace with height up to 100 m, multilayer steel structure main workshop (for steel making, rolling, etc.), and abounding chimneys. Lightning stroke in this case will halt their production in large scale and cause vast direct economic losses.Accident caseOn April 5, 2012, a steel pipe plant in Yangzhou, Jiangsu was struck by lightning, which ignited the paint for spraying steel pipes and caused big area fire. As a consequence, the plant suffered serious losses.2. Fault arcBeing of vast scale, complicated technologies, strict processes, metal smelting enterprises are equipped with, more electric rooms, control rooms and operation rooms, an...
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1. LightningLocated in open fields, the junction of rock and soil, and the place with sudden change in earth resistivity, most coal mining areas are generally easily struck by lightning. Coal production and transport, besides, will generate vast coal dust, which increases conductivity after suspending in the air above such coal mining areas. When acting on the metal pipes and cables of pit, the electromagnetic pulse of lightning stroke will generate overvoltage to interfere with or damage the electronic equipment in pit and then paralyze monitoring systems such as methane monitoring system, fan monitoring system and personnel location system, hence causing production accidents and casualties. Accident case:On the morning of April 24, 2004, Renhua County, Guangdong was attacked by...
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The Saas Valley is surrounded by no less than eighteen 4,000-metre peaks! Its breathtaking landscape of beautiful mountains and glaciers is simply amazing to behold. Perfectly groomed ski slopes reach from 3,600 metres a.s.l. right down to the villages,With 150 km of first-class, well-maintained ski slopes and a panorama of 18 4,000-metre peaks, a large number of tourists and ski-sport fans arrive there in winter. Heavy load causes the damage and the generator tremble-working can't cover the heavy load cause of the insufficient current created by reactive power. on the side of grid , the voltage is not stable for the harmonic. So we provide a solution of installation of Green Var that compensates reactive power and filter harmonic.As a result,Sass-Fee satisfies the need of heavy-l...
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Kelburn is a central suburb of Wellington, the capital city of New Zealand, situated within 1 kilometre (0.62 mi) of the central business district.Kelburn sits on the hills just west of the capital's central business district and is bordered by the Botanic Garden and the suburbs of Thorndon and Northland to the north, the suburbs of Karori and Highbury to the west, and Aro Valley to the south. Decentralization of residential zones leads to long-distance of transmission line among them. So that the loss of power during transmission of energy to secondary substation make terminal voltage drop unplanned . After in conjunction with GreenVar,it compensate the voltage in order to stable the power transmission and solve effectively the problem of electrical system caused by reactive powe...
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Port Adelaide played an important role in the formative decades of Adelaide and South Australia with capacity of about 10 million tons of goods, people move and manage containers of goods by loading tools as loader machines , container cranes etc that are also load for circuit .Due to the long transmission line, the terminal voltage is higher at light load and the terminal voltage is too low at heavy load. So that the typical harmonic voltage occurs on the condition of changing-load .the processes of high heavy container moving obtain a solution to solve the problem of harmonic that affect the works in port ADELAIDE . Since the installation of the GreenSine , the harmonics in the voltage have reduced ,and make moving of containers more fast , more influence ,and more simple.